Merge branch 'verification_mail' into 'master'

api/urls.py

gitlab-ci.yml

oser_backend/settings/common.py

oser_backend/urls.py

profiles/migrations/0017_student_qpv.py

profiles/migrations/0018_auto_20220909_1740.py

profiles/models.py

profiles/serializers.py

register/migrations/0003_registration_dateofbirth.py

register/models.py

register/serializers.py

register/signals.py

test_1

tests/test_visits/test_participation.py

tests/test_visits/test_signals.py

users/admin.py

users/forms.py

users/migrations/0004_user_qpv.py

users/migrations/0005_remove_user_qpv.py

users/migrations/0006_user_hassignedvharter.py